1. The surveillance, epidemiology, and end results (SEER) program, national cancer institute (NCI). Cancer Stat Facts: female breast cancer https://seer.cancer.gov/statfacts/html/breast.html. Accessed 11 April 2021.
2. Cancer Research UK. Breast Cancer (C50), European Age-Standardised Mortality Rates per 100,000 Population, UK, 1971-2018 https://www.cancerresearchuk.org/health-professional/cancer-statistics/statistics-by-cancer-type/breast-cancer/mortality#heading-Two. Accessed 12 April 2021.
3. Global surveillance of trends in cancer survival 2000-14 (CONCORD-3): analysis of individual records for 37 513 025 patients diagnosed with one of 18 cancers from 322 population-based registries in 71 countries;Allemani;Lancet,2018
4. Improvement of prognosis in breast cancer in Denmark 1977-2006, based on the nationwide reporting to the DBCG Registry;Mouridsen;Acta Oncol,2008
5. Patterns of relapse in breast cancer: changes over time;Yerushalmi;Breast Cancer Res Treat,2010